Title (de)

Title (fr)

Publication

Application

Priority

HU 9801582 A 19980715

Abstract (en)

[origin: EP0972970A2] A differential lock-up assembly for vehicles with a differential gear set has a main drive housing (1), a driving pinion gear (2) being rotatable in the main drive housing (1), a ring gear (4) engaging the pinion gear (2), a planet carrier (5) secured to the ring gear (4) and rotatably supported in the main drive housing (1), a set of pinion gears (9) journalled in the planet carrier (5) and a set of bevel gears (10, 11) engaging the pinion gears (9) and journalled in the planet carrier (5) and engaged to output shafts of the differential gear set, and a lockout clutch assembly (12) with a pack of interleaved discs (13) locking the planet carrier (5) to one of the output shafts on the impact of pressurised fluid with the intermediation of a piston and cylinder assembly (22). The improvement achieved by this invention is that a cylinder (30) of the piston and cylinder assembly (22) is arranged concentrically around a cylindrical extension (23) of the planet carrier (5) and is supported in the main drive housing (1) by loose fitting, and the piston is split into a first piston (24, 50) and a second piston(26, 52), one piston (24, 52) of which is rotatably arranged around said cylindrical extension (23) of the planet carrier (5), and one of the pistons (24, 50) is engaged with the discs (13) of the lockout clutch assembly (12) and the other piston (26, 52) is supported axially to counteract its motion in opposite direction to the discs (13), and the pistons (24, 26; 50, 52) and the cylinder (30) are disposable to each other in axial direction but fixed to each other against radial movement and they are sealed against each other, and the pressurised fluid is introduced into a sealed pressure chamber (38) provided between the pistons (24, 26; 50, 52) and the cylinder (30). <IMAGE>